Pick up the sddm fork's 0.2.3 branch HEAD (a994435), which builds
SDDM as a Wayland-only greeter/daemon for Redox. Highlights:
-DNO_X11 is added globally so X11 code paths are compiled out;
the XAU/XCB/XKB find_package calls are switched to QUIET so
missing X11 dev packages on a Wayland-only build do not fail
configure. XAuth.cpp, XorgDisplayServer.cpp,
XorgUserDisplayServer, and XcbKeyboardBackend sources are
dropped from the daemon, greeter, and helper link lists, the
sddm-helper-start-x11user target is removed, the .ts -> .qm
translation step is dropped (LinguistTools no longer required),
and the test/ subdir is no longer built. UserSession replaces
the Xauthority cookie write with a no-op (Wayland-only) and
passes an explicit third argument to TIOCSCTTY. Note: the
preprocessor guards in Display.cpp / Greeter.cpp / Seat.cpp /
KeyboardModel.cpp are emitted as deeply-nested duplicate
#ifndef NO_X11 blocks; the guards are semantically equivalent
to a single pair per region but should be collapsed in a
follow-up cleanup.
vasilito
e13c35886d